Google Reader - 2 convenient buttons(bookmarks)

I use Google Reader to keep in track with the zillions of posts fed to Nittians.com, but I started it out to keep watch on my friends.

I found two useful buttons(bookmarks).

The first one is a 'next' bookmark, which upon clicking will take you to the next unread item(the actual page itself) in your Reader; you don't have to visit the Google Reader homepage to find the next unread item.
This option is found in the 'Settings>Goodies' in Reader, under the 'Put Reader in a bookmark' section. You have to drag it and put it in the bookmarks tab(or bookmarks folder if you don't have one).
The clearest advantage of this bookmark is that you will visit the actual page of the person you've subscribed to, giving it a 'personal touch'. However, if you have subscribed to a news feed, this is not a good choice, instead you can use the other option available: you can bookmark only for certain tags. This option too is available in the same section I mentioned earlier.

The second useful bookmark is the 'Share' button with which you can add a webpage to your (Google Reader's) shared page with a click of a mouse, adding any notes if required.
It can be found by clicking on the 'Notes' link under 'Your Stuff' on the collapsible panel on the left side in Reader. Again you have to drag the given link to your bookmark toolbar(or folder), and upon clicking it when on a page will give an option of sharing by including any remarks or 'notes' you want to. Here's a picture to help you better:
Hope these two help you out in some way.